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Rietveld Analysis of Ceramic Nuclear Waste Forms

Published online by Cambridge University Press:  25 February 2011

T.J. White  and
H. Mitamura
T.J. White
Affiliation:
Ian Wark Research Institute, The University of South Australia, PO Box 1 Ingle Farm, SA 5098 Australia
H. Mitamura
Affiliation:
Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki, Japan 319-11
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Abstract

Powder X-ray diffraction patterns were collected from three titanate waste forms - a calcine powder, a prototype ceramic without waste, and a ceramic containing 10 wt% JW-A simulated waste - and interpreted quantitatively using the Rietveld method. The calcine consisted of fluorite, pyrochlore, rutile, and amorphous material. The prototype waste form contained rutile, hollandite, zirconolite and perovskite. The phase constitution of the JW-A ceramic was freudenbergite, loveringite, hollandite, zirconolite, perovskite and baddeleyite. Procedures for the collection of X-ray data are described, as are assumptions inherent in the Rietveld approach. A selection of refined crystal data are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 299
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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